Manim常见问题解决方案

ManimCE

中文渲染以及自定义字体

from manim import Scene, Tex, TexTemplateLibrary, DOWN, UP


class TestText(Scene):
    def construct(self):
        tex_template = TexTemplateLibrary.ctex
        tex_template.add_to_preamble(r"""
        \setCJKmainfont{Noto Sans SC}[BoldFont={Noto Sans SC}, AutoFakeSlant]
        \setCJKsansfont{Noto Sans SC}[BoldFont={Noto Sans SC}]
        """)

        text1 = Tex(r'要使得 $\overline{\varepsilon^2}$ 最小，则对b的选择应满足：', tex_template=tex_template)
        text2 = Tex(
            r"""
            \frac{\partial}{\partial b}[E(a_j-b)^2] &= \frac{\partial}{\partial b}[E(a_j^2-2a_jb+b^2)] \nonumber
            \\
            &= -2[E(a_j)-b] \nonumber
            \\
            &=0 \nonumber""",
            tex_environment='align',
            tex_template=tex_template,
        )
        self.add(text1.move_to(UP * 3))
        self.add(text2.next_to(text1, DOWN * 2))